seems to be a machlokes CRC and Star K regarding general quidelines on tequila.
CRC: There are four types of tequila: Blanco (white/silver), Oro (brown/gold), Reposada (aged) and Anejo (extra aged). [Unflavored] Blanco is recommended without hashgachah, but the other three require certification to avoid concerns that flavor, color, and glycerin were added.
Star K: Tequila (Anejo, Resposado, Gold)
Certification status: Acceptable WITHOUT Certification
Description: Anejo, Reposado, Gold
Excluding : Flavored Tequila, when a worm is present or when labeled with the words "Burdeos, Sherry, Post, Madeira, Oloroso, Sauterne, Shiraz, Dual Cask Finish, or Double-Matured
Tequila (Blanco, Silver, White)
Certification status: Acceptable WITHOUT Certification
Description: Blanco, Silver, White
Excluding : Excluding Flavored Tequila or when a worm is present.
Does anyone have an explanation?